Home / 21,094.40-29,109.45-12,135.80

Finding the Fourth Proportional to 21,094.40, 29,109.45 and 12,135.80

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Solution

The fourth proportional to 21,094.40, 29,109.45 and 12,135.80 is: 16,746.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,094.40 : 29,109.45 = 12,135.80 : x
  2. Step 2: Convert to fraction form
    21,094.40/29,109.45 = 12,135.80/x
  3. Step 3: Cross multiply
    21,094.40x = 29,109.45 × 12,135.80
  4. Step 4: Simplify right side
    21,094.40x = 353,266,463.31
  5. Step 5: Solve for x
    x = 353,266,463.31/21,094.40
  6. Step 6: Final answer
    x = 16,746.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.